I inspected it and mine had a small pinhole in it. The plastic it wad covering had a small mold defect and poked a hole in it. Thank for this very informing video. Without I would not have been brave enough to tackle this. Cheers
Thanks! Just recently had a similar situation. You helped me to understand the construction of that diaphragm and that oil can come out under pressure around that rubber peripheria. I charged my brake system and it was OK. When I changed new pads it turned out to be over pressure in the system and a bit of oil was thrown out of that diaphragm. it works now but not satisfied with the handbrake range with the old support.
@@davidspear6682 my set has 2.5mm 2mm and 1.5mm - couldn't say for sure which one is the right one, but one of these definitely did the job - a lot of sets don't have a 1.5mm I know. Hope that helps
I found myself in the same situation. I couldn’t find the part for the XT brakes but I found it for the XTR. Slightly different but I thought it was worth a try. I just finished it and about to install it back on the bike. I see that you also have the XTR part which is slightly different. Any issues long term?
I am going trought the same problem. My brake is a XT M8000 and I just can find for M9100 (as the vídeo) and for XT M8100. I just cant figure out if fits well.
@@javiersevilla32 "My lever loses pressure when I leave it pressed, could it be because of the diaphragm? Thanks" - Javier, I'm not sure; usually leaving the lever pressed overnight is a way to get air out of the system - have you bled your brakes recently? Javier, no estoy seguro; normalmente dejar la palanca presionada durante la noche es una forma de sacar el aire del systema ¿Has purgado los frenos recientemente?
You are slightly wrong there's no pressure created in the area of the bladder. It is there to compensate for the oil used from piston displacement and it is effectively filled with atmosphere pressure through the end hole and stops the system cavitating. All the pressure is applied by the internal piston passing the oil way holes, sealing off the circuit and continuing to push transfers the pressure throughout the system and as the only moving part from then on it pushes the piston out. I appreciate your video for the tip of getting it out though so thanks.
They came from ebay - here's a link that will get you to the right search page: www.ebay.co.uk/itm/226091151764?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=uapkhczhs6i&sssrc=4429486&ssuid=E9nmNkuBRt2&var=&widget_ver=artemis&media=COPY
I inspected it and mine had a small pinhole in it. The plastic it wad covering had a small mold defect and poked a hole in it. Thank for this very informing video. Without I would not have been brave enough to tackle this. Cheers
You're welcome! - Glad it helped, well done
Thanks! Just recently had a similar situation. You helped me to understand the construction of that diaphragm and that oil can come out under pressure around that rubber peripheria. I charged my brake system and it was OK. When I changed new pads it turned out to be over pressure in the system and a bit of oil was thrown out of that diaphragm. it works now but not satisfied with the handbrake range with the old support.
Just come back from the Alps - 5 days of 4000 - 6000m of descent a day - I feel this has now been tested 😅 - it works
What size hex key is that little grub screw? Mine doesn't seem to be small enough.
@@davidspear6682 my set has 2.5mm 2mm and 1.5mm - couldn't say for sure which one is the right one, but one of these definitely did the job - a lot of sets don't have a 1.5mm I know. Hope that helps
@realworldriding2601 Thanks
Thanks for sharing. I lost my grub screw. Can you please share the Shimano part number for a replacement?
Im replacing mine right now. I took off the lever and the plastic shim underneath where the metal dowl pin goes. Its much easier to access.
I found myself in the same situation. I couldn’t find the part for the XT brakes but I found it for the XTR. Slightly different but I thought it was worth a try. I just finished it and about to install it back on the bike. I see that you also have the XTR part which is slightly different. Any issues long term?
Not so far - definitely some differences in fit but no leakage as yet.
I am going trought the same problem. My brake is a XT M8000 and I just can find for M9100 (as the vídeo) and for XT M8100. I just cant figure out if fits well.
@@gustavoebo9002 I’m not sure about the 8000-9000 compatibility, but I can confirm that the 8100-9100 are cross compatible
@@ariskardas thanks for confirming that - it will help others on this thread
@@realworldriding2601 Will this part number work on the MT-7100?
Hola mi maneta pierde presion cundo la dejo apretada puede ser por el diaframa gracias
@@javiersevilla32 "My lever loses pressure when I leave it pressed, could it be because of the diaphragm? Thanks" - Javier, I'm not sure; usually leaving the lever pressed overnight is a way to get air out of the system - have you bled your brakes recently?
Javier, no estoy seguro; normalmente dejar la palanca presionada durante la noche es una forma de sacar el aire del systema ¿Has purgado los frenos recientemente?
Hola ya encontré el fallo uno de los pistones perdía aceite y al frenar entraba aire al circuito gracias
You are slightly wrong there's no pressure created in the area of the bladder. It is there to compensate for the oil used from piston displacement and it is effectively filled with atmosphere pressure through the end hole and stops the system cavitating. All the pressure is applied by the internal piston passing the oil way holes, sealing off the circuit and continuing to push transfers the pressure throughout the system and as the only moving part from then on it pushes the piston out.
I appreciate your video for the tip of getting it out though so thanks.
Thanks Aidie - this will help others understand better whats' happening in there if they need to: much appreciated.
Which XT is yours? M8000 or M8100? The diaphragm fits well, dispite the pachage says M9100?
NOTE if ypu only release the grub screw rather than remove it you wont have the same issues replacing it afterward!
Have now been running this lever for about 6 months, as a guide: take it from me; this has worked - good luck folks!
I can find the grub screw on the slx but not xt ?
It seems to not necessarily be a slx or xt thing, but the version - I'm afraid I have an XT lever with the grub screw, and one without...
Hi there, thanks for the video, where do you get the diaphrams from?
They came from ebay - here's a link that will get you to the right search page: www.ebay.co.uk/itm/226091151764?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=uapkhczhs6i&sssrc=4429486&ssuid=E9nmNkuBRt2&var=&widget_ver=artemis&media=COPY
They came from ebay - there is a lot of choice
You need a camera mount. All the important scenes were not filmed because you need 2 hands.
What is the part number for the diaphragm for a Slx M7000 lever
@@valyuson7594 I used the M9100 part - the packaging has a bunch of numbers on it. I think the part number is: Y1XJ98030
Is this the same for Deores as well?
@@jongoverthebars3572 it would have to be very similar as the end of the cylinder is pretty much the same - the grub screw would be he tell
thanks!